Using .ico for toolbar button of Firefox addon

0
votes

I want to use an .ico file which contains my addon icon with different sizes (say, 16-24-32 px) as a toolbar button icon. When I'm setting it as an icon for both toolbar sizes and for addon details page, 16px version is always chosen.

Is it possible to make FF pick the right size automatically? So that if toolbar icon size is "large", it'll pick 24px version instead of stretching 16px.

1
firefox-addoniconsxultoolbar

1 Answers

1
votes

You can do this using CSS:

{
    -moz-image-region: rect(0 24px 24px 0);
     list-style-image: url("chrome://sidebar/skin/icon_24x24.png");
}

toolbar[iconsize="small"]
{
    -moz-image-region: rect(0 16px 16px 0);
     list-style-image: url("chrome://sidebar/skin/icon_16x16.png");
}